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@@ -0,0 +1,2809 @@
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+/*
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+* USB FTDI client driver for Elan Digital Systems's Uxxx adapters
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+*
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+* Copyright(C) 2006 Elan Digital Systems Limited
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+* http://www.elandigitalsystems.com
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+*
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+* Author and Maintainer - Tony Olech - Elan Digital Systems
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+* tony.olech@elandigitalsystems.com
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+*
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+* This program is free software;you can redistribute it and/or
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+* modify it under the terms of the GNU General Public License as
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+* published by the Free Software Foundation, version 2.
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+*
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+*
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+* This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
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+* based on various USB client drivers in the 2.6.15 linux kernel
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+* with constant reference to the 3rd Edition of Linux Device Drivers
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+* published by O'Reilly
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+*
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+* The U132 adapter is a USB to CardBus adapter specifically designed
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+* for PC cards that contain an OHCI host controller. Typical PC cards
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+* are the Orange Mobile 3G Option GlobeTrotter Fusion card.
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+*
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+* The U132 adapter will *NOT *work with PC cards that do not contain
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+* an OHCI controller. A simple way to test whether a PC card has an
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+* OHCI controller as an interface is to insert the PC card directly
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+* into a laptop(or desktop) with a CardBus slot and if "lspci" shows
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+* a new USB controller and "lsusb -v" shows a new OHCI Host Controller
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+* then there is a good chance that the U132 adapter will support the
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+* PC card.(you also need the specific client driver for the PC card)
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+*
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+* Please inform the Author and Maintainer about any PC cards that
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+* contain OHCI Host Controller and work when directly connected to
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+* an embedded CardBus slot but do not work when they are connected
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+* via an ELAN U132 adapter.
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+*
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+*/
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+#include <linux/config.h>
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+#include <linux/kernel.h>
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+#include <linux/errno.h>
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+#include <linux/init.h>
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+#include <linux/list.h>
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+#include <linux/ioctl.h>
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+#include <linux/slab.h>
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+#include <linux/module.h>
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+#include <linux/kref.h>
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+#include <asm/uaccess.h>
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+#include <linux/usb.h>
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+#include <linux/workqueue.h>
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+#include <linux/platform_device.h>
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+MODULE_AUTHOR("Tony Olech");
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+MODULE_DESCRIPTION("FTDI ELAN driver");
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+MODULE_LICENSE("GPL");
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+#define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
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+extern struct platform_driver u132_platform_driver;
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+static struct workqueue_struct *status_queue;
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+static struct workqueue_struct *command_queue;
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+static struct workqueue_struct *respond_queue;
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+/*
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+* ftdi_module_lock exists to protect access to global variables
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+*
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+*/
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+static struct semaphore ftdi_module_lock;
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+static int ftdi_instances = 0;
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+static struct list_head ftdi_static_list;
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+/*
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+* end of the global variables protected by ftdi_module_lock
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+*/
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+#include "usb_u132.h"
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+#define TD_DEVNOTRESP 5
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+/* Define these values to match your devices*/
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+#define USB_FTDI_ELAN_VENDOR_ID 0x0403
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+#define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
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+/* table of devices that work with this driver*/
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+static struct usb_device_id ftdi_elan_table[] = {
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+ {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)},
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+ { /* Terminating entry */ }
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+};
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+
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+MODULE_DEVICE_TABLE(usb, ftdi_elan_table);
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+/* only the jtag(firmware upgrade device) interface requires
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+* a device file and corresponding minor number, but the
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+* interface is created unconditionally - I suppose it could
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+* be configured or not according to a module parameter.
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+* But since we(now) require one interface per device,
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+* and since it unlikely that a normal installation would
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+* require more than a couple of elan-ftdi devices, 8 seems
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+* like a reasonable limit to have here, and if someone
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+* really requires more than 8 devices, then they can frig the
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+* code and recompile
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+*/
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+#define USB_FTDI_ELAN_MINOR_BASE 192
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+#define COMMAND_BITS 5
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+#define COMMAND_SIZE (1<<COMMAND_BITS)
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+#define COMMAND_MASK (COMMAND_SIZE-1)
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+struct u132_command {
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+ u8 header;
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+ u16 length;
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+ u8 address;
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+ u8 width;
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+ u32 value;
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+ int follows;
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+ void *buffer;
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+};
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+#define RESPOND_BITS 5
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+#define RESPOND_SIZE (1<<RESPOND_BITS)
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+#define RESPOND_MASK (RESPOND_SIZE-1)
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+struct u132_respond {
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+ u8 header;
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+ u8 address;
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+ u32 *value;
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+ int *result;
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+ struct completion wait_completion;
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+};
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+struct u132_target {
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+ void *endp;
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+ struct urb *urb;
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+ int toggle_bits;
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+ int error_count;
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+ int condition_code;
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+ int repeat_number;
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+ int halted;
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+ int skipped;
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+ int actual;
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+ int non_null;
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+ int active;
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+ int abandoning;
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+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
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+ int toggle_bits, int error_count, int condition_code,
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+ int repeat_number, int halted, int skipped, int actual,
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+ int non_null);
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+};
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+/* Structure to hold all of our device specific stuff*/
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+struct usb_ftdi {
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+ struct list_head ftdi_list;
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+ struct semaphore u132_lock;
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+ int command_next;
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+ int command_head;
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+ struct u132_command command[COMMAND_SIZE];
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+ int respond_next;
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+ int respond_head;
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+ struct u132_respond respond[RESPOND_SIZE];
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+ struct u132_target target[4];
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+ char device_name[16];
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+ unsigned synchronized:1;
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+ unsigned enumerated:1;
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+ unsigned registered:1;
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+ unsigned initialized:1;
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+ unsigned card_ejected:1;
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+ int function;
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+ int sequence_num;
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+ int disconnected;
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+ int gone_away;
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+ int stuck_status;
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+ int status_queue_delay;
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+ struct semaphore sw_lock;
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+ struct usb_device *udev;
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+ struct usb_interface *interface;
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+ struct usb_class_driver *class;
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+ struct work_struct status_work;
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+ struct work_struct command_work;
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+ struct work_struct respond_work;
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+ struct u132_platform_data platform_data;
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+ struct resource resources[0];
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+ struct platform_device platform_dev;
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+ unsigned char *bulk_in_buffer;
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+ size_t bulk_in_size;
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+ size_t bulk_in_last;
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+ size_t bulk_in_left;
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+ __u8 bulk_in_endpointAddr;
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+ __u8 bulk_out_endpointAddr;
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+ struct kref kref;
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+ u32 controlreg;
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+ u8 response[4 + 1024];
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+ int expected;
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+ int recieved;
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+ int ed_found;
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+};
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+#define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref)
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+#define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \
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+ platform_dev)
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+static struct usb_driver ftdi_elan_driver;
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+static void ftdi_elan_delete(struct kref *kref)
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+{
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+ struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref);
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+ dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi);
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+ usb_put_dev(ftdi->udev);
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+ ftdi->disconnected += 1;
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+ down(&ftdi_module_lock);
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+ list_del_init(&ftdi->ftdi_list);
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+ ftdi_instances -= 1;
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+ up(&ftdi_module_lock);
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+ kfree(ftdi->bulk_in_buffer);
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+ ftdi->bulk_in_buffer = NULL;
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+}
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+
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+static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
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+{
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+}
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+
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+static void ftdi_elan_get_kref(struct usb_ftdi *ftdi)
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+{
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+ kref_get(&ftdi->kref);
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+}
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+
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+static void ftdi_elan_init_kref(struct usb_ftdi *ftdi)
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+{
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+ kref_init(&ftdi->kref);
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+}
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+
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+static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
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+ return;
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+ } else if (queue_work(status_queue, &ftdi->status_work))
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+ return;
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+ return;
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+}
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+
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+static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
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+ kref_get(&ftdi->kref);
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+ } else if (queue_work(status_queue, &ftdi->status_work))
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+ kref_get(&ftdi->kref);
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+ return;
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+}
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+
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+static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
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+{
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+ if (cancel_delayed_work(&ftdi->status_work))
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+}
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+
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+static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(command_queue, &ftdi->command_work,
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+ delta))
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+ return;
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+ } else if (queue_work(command_queue, &ftdi->command_work))
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+ return;
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+ return;
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+}
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+
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+static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(command_queue, &ftdi->command_work,
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+ delta))
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+ kref_get(&ftdi->kref);
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+ } else if (queue_work(command_queue, &ftdi->command_work))
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+ kref_get(&ftdi->kref);
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+ return;
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+}
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+
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+static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
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+{
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+ if (cancel_delayed_work(&ftdi->command_work))
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+}
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+
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+static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
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+ unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(respond_queue, &ftdi->respond_work,
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+ delta))
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+ return;
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+ } else if (queue_work(respond_queue, &ftdi->respond_work))
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+ return;
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+ return;
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+}
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+
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+static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
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+{
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+ if (delta > 0) {
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+ if (queue_delayed_work(respond_queue, &ftdi->respond_work,
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+ delta))
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+ kref_get(&ftdi->kref);
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+ } else if (queue_work(respond_queue, &ftdi->respond_work))
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+ kref_get(&ftdi->kref);
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+ return;
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+}
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+
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+static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
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+{
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+ if (cancel_delayed_work(&ftdi->respond_work))
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+ kref_put(&ftdi->kref, ftdi_elan_delete);
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+}
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+
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+void ftdi_elan_gone_away(struct platform_device *pdev)
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+{
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+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
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+ ftdi->gone_away += 1;
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+ ftdi_elan_put_kref(ftdi);
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+}
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+
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+
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+EXPORT_SYMBOL_GPL(ftdi_elan_gone_away);
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+void ftdi_release_platform_dev(struct device *dev)
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+{
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+ dev->parent = NULL;
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+}
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+
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+static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
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+ struct u132_target *target, u8 *buffer, int length);
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+static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi);
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+static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi);
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+static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi);
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+static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi);
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+static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi);
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+static int ftdi_elan_synchronize(struct usb_ftdi *ftdi);
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+static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi);
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+static int ftdi_elan_command_engine(struct usb_ftdi *ftdi);
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+static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi);
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+static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi)
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+{
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+ int result;
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+ if (ftdi->platform_dev.dev.parent)
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+ return -EBUSY;
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+ ftdi_elan_get_kref(ftdi);
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+ ftdi->platform_data.potpg = 100;
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+ ftdi->platform_data.reset = NULL;
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+ ftdi->platform_dev.id = ftdi->sequence_num;
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+ ftdi->platform_dev.resource = ftdi->resources;
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+ ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources);
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+ ftdi->platform_dev.dev.platform_data = &ftdi->platform_data;
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+ ftdi->platform_dev.dev.parent = NULL;
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+ ftdi->platform_dev.dev.release = ftdi_release_platform_dev;
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+ ftdi->platform_dev.dev.dma_mask = NULL;
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+ snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd");
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+ ftdi->platform_dev.name = ftdi->device_name;
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+ dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd");
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+ request_module("u132_hcd");
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+ dev_info(&ftdi->udev->dev, "registering '%s'\n",
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+ ftdi->platform_dev.name);
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+ result = platform_device_register(&ftdi->platform_dev);
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+ return result;
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+}
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+
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+static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi)
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+{
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+ down(&ftdi->u132_lock);
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+ while (ftdi->respond_next > ftdi->respond_head) {
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+ struct u132_respond *respond = &ftdi->respond[RESPOND_MASK &
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+ ftdi->respond_head++];
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+ *respond->result = -ESHUTDOWN;
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+ *respond->value = 0;
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+ complete(&respond->wait_completion);
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+ } up(&ftdi->u132_lock);
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+}
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+
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+static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
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+{
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+ int ed_number = 4;
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+ down(&ftdi->u132_lock);
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+ while (ed_number-- > 0) {
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+ struct u132_target *target = &ftdi->target[ed_number];
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+ if (target->active == 1) {
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+ target->condition_code = TD_DEVNOTRESP;
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+ up(&ftdi->u132_lock);
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+ ftdi_elan_do_callback(ftdi, target, NULL, 0);
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+ down(&ftdi->u132_lock);
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+ }
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+ }
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+ ftdi->recieved = 0;
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+ ftdi->expected = 4;
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+ ftdi->ed_found = 0;
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+ up(&ftdi->u132_lock);
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int ed_number = 4;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ while (ed_number-- > 0) {
|
|
|
+ struct u132_target *target = &ftdi->target[ed_number];
|
|
|
+ target->abandoning = 1;
|
|
|
+ wait_1:if (target->active == 1) {
|
|
|
+ int command_size = ftdi->command_next -
|
|
|
+ ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x80 | (ed_number << 5) | 0x4;
|
|
|
+ command->length = 0x00;
|
|
|
+ command->address = 0x00;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ goto wait_1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ wait_2:if (target->active == 1) {
|
|
|
+ int command_size = ftdi->command_next -
|
|
|
+ ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x90 | (ed_number << 5);
|
|
|
+ command->length = 0x00;
|
|
|
+ command->address = 0x00;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ goto wait_2;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int ed_number = 4;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ while (ed_number-- > 0) {
|
|
|
+ struct u132_target *target = &ftdi->target[ed_number];
|
|
|
+ target->abandoning = 1;
|
|
|
+ wait:if (target->active == 1) {
|
|
|
+ int command_size = ftdi->command_next -
|
|
|
+ ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x80 | (ed_number << 5) | 0x4;
|
|
|
+ command->length = 0x00;
|
|
|
+ command->address = 0x00;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ ftdi_command_queue_work(ftdi, 0);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_command_work(void *data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = data;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ return;
|
|
|
+ } else {
|
|
|
+ int retval = ftdi_elan_command_engine(ftdi);
|
|
|
+ if (retval == -ESHUTDOWN) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else if (retval == -ENODEV) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else if (retval)
|
|
|
+ dev_err(&ftdi->udev->dev, "command error %d\n", retval);
|
|
|
+ ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10));
|
|
|
+ return;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ ftdi_respond_queue_work(ftdi, 0);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_respond_work(void *data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = data;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ return;
|
|
|
+ } else {
|
|
|
+ int retval = ftdi_elan_respond_engine(ftdi);
|
|
|
+ if (retval == 0) {
|
|
|
+ } else if (retval == -ESHUTDOWN) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else if (retval == -ENODEV) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else if (retval == -ENODEV) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else if (retval == -EILSEQ) {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ } else {
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ dev_err(&ftdi->udev->dev, "respond error %d\n", retval);
|
|
|
+ }
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ ftdi_elan_abandon_completions(ftdi);
|
|
|
+ ftdi_elan_abandon_targets(ftdi);
|
|
|
+ }
|
|
|
+ ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10));
|
|
|
+ return;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* the sw_lock is initially held and will be freed
|
|
|
+* after the FTDI has been synchronized
|
|
|
+*
|
|
|
+*/
|
|
|
+static void ftdi_elan_status_work(void *data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = data;
|
|
|
+ int work_delay_in_msec = 0;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ return;
|
|
|
+ } else if (ftdi->synchronized == 0) {
|
|
|
+ down(&ftdi->sw_lock);
|
|
|
+ if (ftdi_elan_synchronize(ftdi) == 0) {
|
|
|
+ ftdi->synchronized = 1;
|
|
|
+ ftdi_command_queue_work(ftdi, 1);
|
|
|
+ ftdi_respond_queue_work(ftdi, 1);
|
|
|
+ up(&ftdi->sw_lock);
|
|
|
+ work_delay_in_msec = 100;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "synchronize failed\n");
|
|
|
+ up(&ftdi->sw_lock);
|
|
|
+ work_delay_in_msec = 10 *1000;
|
|
|
+ }
|
|
|
+ } else if (ftdi->stuck_status > 0) {
|
|
|
+ if (ftdi_elan_stuck_waiting(ftdi) == 0) {
|
|
|
+ ftdi->stuck_status = 0;
|
|
|
+ ftdi->synchronized = 0;
|
|
|
+ } else if ((ftdi->stuck_status++ % 60) == 1) {
|
|
|
+ dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
|
|
|
+ "- please remove\n");
|
|
|
+ } else
|
|
|
+ dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
|
|
|
+ "- checked %d times\n", ftdi->stuck_status);
|
|
|
+ work_delay_in_msec = 100;
|
|
|
+ } else if (ftdi->enumerated == 0) {
|
|
|
+ if (ftdi_elan_enumeratePCI(ftdi) == 0) {
|
|
|
+ ftdi->enumerated = 1;
|
|
|
+ work_delay_in_msec = 250;
|
|
|
+ } else
|
|
|
+ work_delay_in_msec = 1000;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ if (ftdi_elan_setupOHCI(ftdi) == 0) {
|
|
|
+ ftdi->initialized = 1;
|
|
|
+ work_delay_in_msec = 500;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "initialized failed - trying "
|
|
|
+ "again in 10 seconds\n");
|
|
|
+ work_delay_in_msec = 10 *1000;
|
|
|
+ }
|
|
|
+ } else if (ftdi->registered == 0) {
|
|
|
+ work_delay_in_msec = 10;
|
|
|
+ if (ftdi_elan_hcd_init(ftdi) == 0) {
|
|
|
+ ftdi->registered = 1;
|
|
|
+ } else
|
|
|
+ dev_err(&ftdi->udev->dev, "register failed\n");
|
|
|
+ work_delay_in_msec = 250;
|
|
|
+ } else {
|
|
|
+ if (ftdi_elan_checkingPCI(ftdi) == 0) {
|
|
|
+ work_delay_in_msec = 250;
|
|
|
+ } else if (ftdi->controlreg & 0x00400000) {
|
|
|
+ if (ftdi->gone_away > 0) {
|
|
|
+ dev_err(&ftdi->udev->dev, "PCI device eject con"
|
|
|
+ "firmed platform_dev.dev.parent=%p plat"
|
|
|
+ "form_dev.dev=%p\n",
|
|
|
+ ftdi->platform_dev.dev.parent,
|
|
|
+ &ftdi->platform_dev.dev);
|
|
|
+ platform_device_unregister(&ftdi->platform_dev);
|
|
|
+ ftdi->platform_dev.dev.parent = NULL;
|
|
|
+ ftdi->registered = 0;
|
|
|
+ ftdi->enumerated = 0;
|
|
|
+ ftdi->card_ejected = 0;
|
|
|
+ ftdi->initialized = 0;
|
|
|
+ ftdi->gone_away = 0;
|
|
|
+ } else
|
|
|
+ ftdi_elan_flush_targets(ftdi);
|
|
|
+ work_delay_in_msec = 250;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "PCI device has disappeared\n"
|
|
|
+ );
|
|
|
+ ftdi_elan_cancel_targets(ftdi);
|
|
|
+ work_delay_in_msec = 500;
|
|
|
+ ftdi->enumerated = 0;
|
|
|
+ ftdi->initialized = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ return;
|
|
|
+ } else {
|
|
|
+ ftdi_status_requeue_work(ftdi,
|
|
|
+ msecs_to_jiffies(work_delay_in_msec));
|
|
|
+ return;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* file_operations for the jtag interface
|
|
|
+*
|
|
|
+* the usage count for the device is incremented on open()
|
|
|
+* and decremented on release()
|
|
|
+*/
|
|
|
+static int ftdi_elan_open(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ int subminor = iminor(inode);
|
|
|
+ struct usb_interface *interface = usb_find_interface(&ftdi_elan_driver,
|
|
|
+ subminor);
|
|
|
+ if (!interface) {
|
|
|
+ printk(KERN_ERR "can't find device for minor %d\n", subminor);
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ struct usb_ftdi *ftdi = usb_get_intfdata(interface);
|
|
|
+ if (!ftdi) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ if (down_interruptible(&ftdi->sw_lock)) {
|
|
|
+ return -EINTR;
|
|
|
+ } else {
|
|
|
+ ftdi_elan_get_kref(ftdi);
|
|
|
+ file->private_data = ftdi;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_release(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
|
|
|
+ if (ftdi == NULL)
|
|
|
+ return -ENODEV;
|
|
|
+ up(&ftdi->sw_lock); /* decrement the count on our device */
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+#define FTDI_ELAN_IOC_MAGIC 0xA1
|
|
|
+#define FTDI_ELAN_IOCDEBUG _IOC(_IOC_WRITE, FTDI_ELAN_IOC_MAGIC, 1, 132)
|
|
|
+static int ftdi_elan_ioctl(struct inode *inode, struct file *file,
|
|
|
+ unsigned int cmd, unsigned long arg)
|
|
|
+{
|
|
|
+ switch (cmd) {
|
|
|
+ case FTDI_ELAN_IOCDEBUG:{
|
|
|
+ char line[132];
|
|
|
+ int size = strncpy_from_user(line,
|
|
|
+ (const char __user *)arg, sizeof(line));
|
|
|
+ if (size < 0) {
|
|
|
+ return -EINVAL;
|
|
|
+ } else {
|
|
|
+ printk(KERN_ERR "TODO: ioctl %s\n", line);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ default:
|
|
|
+ return -EFAULT;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+*
|
|
|
+* blocking bulk reads are used to get data from the device
|
|
|
+*
|
|
|
+*/
|
|
|
+static ssize_t ftdi_elan_read(struct file *file, char __user *buffer,
|
|
|
+ size_t count, loff_t *ppos)
|
|
|
+{
|
|
|
+ char data[30 *3 + 4];
|
|
|
+ char *d = data;
|
|
|
+ int m = (sizeof(data) - 1) / 3;
|
|
|
+ int bytes_read = 0;
|
|
|
+ int retry_on_empty = 10;
|
|
|
+ int retry_on_timeout = 5;
|
|
|
+ struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ data[0] = 0;
|
|
|
+ have:if (ftdi->bulk_in_left > 0) {
|
|
|
+ if (count-- > 0) {
|
|
|
+ char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer;
|
|
|
+ ftdi->bulk_in_left -= 1;
|
|
|
+ if (bytes_read < m) {
|
|
|
+ d += sprintf(d, " %02X", 0x000000FF & *p);
|
|
|
+ } else if (bytes_read > m) {
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ if (copy_to_user(buffer++, p, 1)) {
|
|
|
+ return -EFAULT;
|
|
|
+ } else {
|
|
|
+ bytes_read += 1;
|
|
|
+ goto have;
|
|
|
+ }
|
|
|
+ } else
|
|
|
+ return bytes_read;
|
|
|
+ }
|
|
|
+ more:if (count > 0) {
|
|
|
+ int packet_bytes = 0;
|
|
|
+ int retval = usb_bulk_msg(ftdi->udev,
|
|
|
+ usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
|
|
|
+ ftdi->bulk_in_buffer, ftdi->bulk_in_size,
|
|
|
+ &packet_bytes, msecs_to_jiffies(50));
|
|
|
+ if (packet_bytes > 2) {
|
|
|
+ ftdi->bulk_in_left = packet_bytes - 2;
|
|
|
+ ftdi->bulk_in_last = 1;
|
|
|
+ goto have;
|
|
|
+ } else if (retval == -ETIMEDOUT) {
|
|
|
+ if (retry_on_timeout-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else if (bytes_read > 0) {
|
|
|
+ return bytes_read;
|
|
|
+ } else
|
|
|
+ return retval;
|
|
|
+ } else if (retval == 0) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return bytes_read;
|
|
|
+ } else
|
|
|
+ return retval;
|
|
|
+ } else
|
|
|
+ return bytes_read;
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = (struct usb_ftdi *)urb->context;
|
|
|
+ if (urb->status && !(urb->status == -ENOENT || urb->status ==
|
|
|
+ -ECONNRESET || urb->status == -ESHUTDOWN)) {
|
|
|
+ dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %"
|
|
|
+ "d\n", urb, urb->status);
|
|
|
+ }
|
|
|
+ usb_buffer_free(urb->dev, urb->transfer_buffer_length,
|
|
|
+ urb->transfer_buffer, urb->transfer_dma);
|
|
|
+}
|
|
|
+
|
|
|
+static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi,
|
|
|
+ char *buf, int command_size, int total_size)
|
|
|
+{
|
|
|
+ int ed_commands = 0;
|
|
|
+ int b = 0;
|
|
|
+ int I = command_size;
|
|
|
+ int i = ftdi->command_head;
|
|
|
+ while (I-- > 0) {
|
|
|
+ struct u132_command *command = &ftdi->command[COMMAND_MASK &
|
|
|
+ i++];
|
|
|
+ int F = command->follows;
|
|
|
+ u8 *f = command->buffer;
|
|
|
+ if (command->header & 0x80) {
|
|
|
+ ed_commands |= 1 << (0x3 & (command->header >> 5));
|
|
|
+ }
|
|
|
+ buf[b++] = command->header;
|
|
|
+ buf[b++] = (command->length >> 0) & 0x00FF;
|
|
|
+ buf[b++] = (command->length >> 8) & 0x00FF;
|
|
|
+ buf[b++] = command->address;
|
|
|
+ buf[b++] = command->width;
|
|
|
+ while (F-- > 0) {
|
|
|
+ buf[b++] = *f++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return ed_commands;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size)
|
|
|
+{
|
|
|
+ int total_size = 0;
|
|
|
+ int I = command_size;
|
|
|
+ int i = ftdi->command_head;
|
|
|
+ while (I-- > 0) {
|
|
|
+ struct u132_command *command = &ftdi->command[COMMAND_MASK &
|
|
|
+ i++];
|
|
|
+ total_size += 5 + command->follows;
|
|
|
+ } return total_size;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retval;
|
|
|
+ char *buf;
|
|
|
+ int ed_commands;
|
|
|
+ int total_size;
|
|
|
+ struct urb *urb;
|
|
|
+ int command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size == 0)
|
|
|
+ return 0;
|
|
|
+ total_size = ftdi_elan_total_command_size(ftdi, command_size);
|
|
|
+ urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
+ if (!urb) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not get a urb to write %d comm"
|
|
|
+ "ands totaling %d bytes to the Uxxx\n", command_size,
|
|
|
+ total_size);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ buf = usb_buffer_alloc(ftdi->udev, total_size, GFP_KERNEL,
|
|
|
+ &urb->transfer_dma);
|
|
|
+ if (!buf) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c"
|
|
|
+ "ommands totaling %d bytes to the Uxxx\n", command_size,
|
|
|
+ total_size);
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf,
|
|
|
+ command_size, total_size);
|
|
|
+ usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
|
|
|
+ ftdi->bulk_out_endpointAddr), buf, total_size,
|
|
|
+ ftdi_elan_write_bulk_callback, ftdi);
|
|
|
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
+ if (ed_commands) {
|
|
|
+ char diag[40 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = total_size;
|
|
|
+ u8 *c = buf;
|
|
|
+ int s = (sizeof(diag) - 1) / 3;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (s-- > 0 && m-- > 0) {
|
|
|
+ if (s > 0 || m == 0) {
|
|
|
+ d += sprintf(d, " %02X", *c++);
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ }
|
|
|
+ }
|
|
|
+ retval = usb_submit_urb(urb, GFP_KERNEL);
|
|
|
+ if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write "
|
|
|
+ "%d commands totaling %d bytes to the Uxxx\n", retval,
|
|
|
+ urb, command_size, total_size);
|
|
|
+ usb_buffer_free(ftdi->udev, total_size, buf, urb->transfer_dma);
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+ usb_free_urb(urb); /* release our reference to this urb,
|
|
|
+ the USB core will eventually free it entirely */
|
|
|
+ ftdi->command_head += command_size;
|
|
|
+ ftdi_elan_kick_respond_queue(ftdi);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
|
|
|
+ struct u132_target *target, u8 *buffer, int length)
|
|
|
+{
|
|
|
+ struct urb *urb = target->urb;
|
|
|
+ int halted = target->halted;
|
|
|
+ int skipped = target->skipped;
|
|
|
+ int actual = target->actual;
|
|
|
+ int non_null = target->non_null;
|
|
|
+ int toggle_bits = target->toggle_bits;
|
|
|
+ int error_count = target->error_count;
|
|
|
+ int condition_code = target->condition_code;
|
|
|
+ int repeat_number = target->repeat_number;
|
|
|
+ void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int,
|
|
|
+ int, int, int, int) = target->callback;
|
|
|
+ target->active -= 1;
|
|
|
+ target->callback = NULL;
|
|
|
+ (*callback) (target->endp, urb, buffer, length, toggle_bits,
|
|
|
+ error_count, condition_code, repeat_number, halted, skipped,
|
|
|
+ actual, non_null);
|
|
|
+}
|
|
|
+
|
|
|
+static char *have_ed_set_response(struct usb_ftdi *ftdi,
|
|
|
+ struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
|
|
|
+ char *b)
|
|
|
+{
|
|
|
+ int payload = (ed_length >> 0) & 0x07FF;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ target->actual = 0;
|
|
|
+ target->non_null = (ed_length >> 15) & 0x0001;
|
|
|
+ target->repeat_number = (ed_length >> 11) & 0x000F;
|
|
|
+ if (ed_type == 0x02) {
|
|
|
+ if (payload == 0 || target->abandoning > 0) {
|
|
|
+ target->abandoning = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
|
|
|
+ payload);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ return ftdi->response;
|
|
|
+ } else {
|
|
|
+ ftdi->expected = 4 + payload;
|
|
|
+ ftdi->ed_found = 1;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return b;
|
|
|
+ }
|
|
|
+ } else if (ed_type == 0x03) {
|
|
|
+ if (payload == 0 || target->abandoning > 0) {
|
|
|
+ target->abandoning = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
|
|
|
+ payload);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ return ftdi->response;
|
|
|
+ } else {
|
|
|
+ ftdi->expected = 4 + payload;
|
|
|
+ ftdi->ed_found = 1;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return b;
|
|
|
+ }
|
|
|
+ } else if (ed_type == 0x01) {
|
|
|
+ target->abandoning = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
|
|
|
+ payload);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ return ftdi->response;
|
|
|
+ } else {
|
|
|
+ target->abandoning = 0;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
|
|
|
+ payload);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ return ftdi->response;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static char *have_ed_get_response(struct usb_ftdi *ftdi,
|
|
|
+ struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
|
|
|
+ char *b)
|
|
|
+{
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ target->condition_code = TD_DEVNOTRESP;
|
|
|
+ target->actual = (ed_length >> 0) & 0x01FF;
|
|
|
+ target->non_null = (ed_length >> 15) & 0x0001;
|
|
|
+ target->repeat_number = (ed_length >> 11) & 0x000F;
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ if (target->active)
|
|
|
+ ftdi_elan_do_callback(ftdi, target, NULL, 0);
|
|
|
+ target->abandoning = 0;
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ return ftdi->response;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* The engine tries to empty the FTDI fifo
|
|
|
+*
|
|
|
+* all responses found in the fifo data are dispatched thus
|
|
|
+* the response buffer can only ever hold a maximum sized
|
|
|
+* response from the Uxxx.
|
|
|
+*
|
|
|
+*/
|
|
|
+static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ u8 *b = ftdi->response + ftdi->recieved;
|
|
|
+ int bytes_read = 0;
|
|
|
+ int retry_on_empty = 1;
|
|
|
+ int retry_on_timeout = 3;
|
|
|
+ int empty_packets = 0;
|
|
|
+ read:{
|
|
|
+ int packet_bytes = 0;
|
|
|
+ int retval = usb_bulk_msg(ftdi->udev,
|
|
|
+ usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
|
|
|
+ ftdi->bulk_in_buffer, ftdi->bulk_in_size,
|
|
|
+ &packet_bytes, msecs_to_jiffies(500));
|
|
|
+ char diag[30 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = packet_bytes;
|
|
|
+ u8 *c = ftdi->bulk_in_buffer;
|
|
|
+ int s = (sizeof(diag) - 1) / 3;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (s-- > 0 && m-- > 0) {
|
|
|
+ if (s > 0 || m == 0) {
|
|
|
+ d += sprintf(d, " %02X", *c++);
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ }
|
|
|
+ if (packet_bytes > 2) {
|
|
|
+ ftdi->bulk_in_left = packet_bytes - 2;
|
|
|
+ ftdi->bulk_in_last = 1;
|
|
|
+ goto have;
|
|
|
+ } else if (retval == -ETIMEDOUT) {
|
|
|
+ if (retry_on_timeout-- > 0) {
|
|
|
+ dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
|
|
|
+ "t_bytes = %d with total %d bytes%s\n",
|
|
|
+ packet_bytes, bytes_read, diag);
|
|
|
+ goto more;
|
|
|
+ } else if (bytes_read > 0) {
|
|
|
+ dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n",
|
|
|
+ bytes_read, diag);
|
|
|
+ return -ENOMEM;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
|
|
|
+ "t_bytes = %d with total %d bytes%s\n",
|
|
|
+ packet_bytes, bytes_read, diag);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ } else if (retval == -EILSEQ) {
|
|
|
+ dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
|
|
|
+ " = %d with total %d bytes%s\n", retval,
|
|
|
+ packet_bytes, bytes_read, diag);
|
|
|
+ return retval;
|
|
|
+ } else if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
|
|
|
+ " = %d with total %d bytes%s\n", retval,
|
|
|
+ packet_bytes, bytes_read, diag);
|
|
|
+ return retval;
|
|
|
+ } else if (packet_bytes == 2) {
|
|
|
+ unsigned char s0 = ftdi->bulk_in_buffer[0];
|
|
|
+ unsigned char s1 = ftdi->bulk_in_buffer[1];
|
|
|
+ empty_packets += 1;
|
|
|
+ if (s0 == 0x31 && s1 == 0x60) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return 0;
|
|
|
+ } else if (s0 == 0x31 && s1 == 0x00) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ } else if (packet_bytes == 1) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ more:{
|
|
|
+ goto read;
|
|
|
+ }
|
|
|
+ have:if (ftdi->bulk_in_left > 0) {
|
|
|
+ u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last];
|
|
|
+ bytes_read += 1;
|
|
|
+ ftdi->bulk_in_left -= 1;
|
|
|
+ if (ftdi->recieved == 0 && c == 0xFF) {
|
|
|
+ goto have;
|
|
|
+ } else
|
|
|
+ *b++ = c;
|
|
|
+ if (++ftdi->recieved < ftdi->expected) {
|
|
|
+ goto have;
|
|
|
+ } else if (ftdi->ed_found) {
|
|
|
+ int ed_number = (ftdi->response[0] >> 5) & 0x03;
|
|
|
+ u16 ed_length = (ftdi->response[2] << 8) |
|
|
|
+ ftdi->response[1];
|
|
|
+ struct u132_target *target = &ftdi->target[ed_number];
|
|
|
+ int payload = (ed_length >> 0) & 0x07FF;
|
|
|
+ char diag[30 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = payload;
|
|
|
+ u8 *c = 4 + ftdi->response;
|
|
|
+ int s = (sizeof(diag) - 1) / 3;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (s-- > 0 && m-- > 0) {
|
|
|
+ if (s > 0 || m == 0) {
|
|
|
+ d += sprintf(d, " %02X", *c++);
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ }
|
|
|
+ ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
|
|
|
+ payload);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ b = ftdi->response;
|
|
|
+ goto have;
|
|
|
+ } else if (ftdi->expected == 8) {
|
|
|
+ u8 buscmd;
|
|
|
+ int respond_head = ftdi->respond_head++;
|
|
|
+ struct u132_respond *respond = &ftdi->respond[
|
|
|
+ RESPOND_MASK & respond_head];
|
|
|
+ u32 data = ftdi->response[7];
|
|
|
+ data <<= 8;
|
|
|
+ data |= ftdi->response[6];
|
|
|
+ data <<= 8;
|
|
|
+ data |= ftdi->response[5];
|
|
|
+ data <<= 8;
|
|
|
+ data |= ftdi->response[4];
|
|
|
+ *respond->value = data;
|
|
|
+ *respond->result = 0;
|
|
|
+ complete(&respond->wait_completion);
|
|
|
+ ftdi->recieved = 0;
|
|
|
+ ftdi->expected = 4;
|
|
|
+ ftdi->ed_found = 0;
|
|
|
+ b = ftdi->response;
|
|
|
+ buscmd = (ftdi->response[0] >> 0) & 0x0F;
|
|
|
+ if (buscmd == 0x00) {
|
|
|
+ } else if (buscmd == 0x02) {
|
|
|
+ } else if (buscmd == 0x06) {
|
|
|
+ } else if (buscmd == 0x0A) {
|
|
|
+ } else
|
|
|
+ dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) va"
|
|
|
+ "lue = %08X\n", buscmd, data);
|
|
|
+ goto have;
|
|
|
+ } else {
|
|
|
+ if ((ftdi->response[0] & 0x80) == 0x00) {
|
|
|
+ ftdi->expected = 8;
|
|
|
+ goto have;
|
|
|
+ } else {
|
|
|
+ int ed_number = (ftdi->response[0] >> 5) & 0x03;
|
|
|
+ int ed_type = (ftdi->response[0] >> 0) & 0x03;
|
|
|
+ u16 ed_length = (ftdi->response[2] << 8) |
|
|
|
+ ftdi->response[1];
|
|
|
+ struct u132_target *target = &ftdi->target[
|
|
|
+ ed_number];
|
|
|
+ target->halted = (ftdi->response[0] >> 3) &
|
|
|
+ 0x01;
|
|
|
+ target->skipped = (ftdi->response[0] >> 2) &
|
|
|
+ 0x01;
|
|
|
+ target->toggle_bits = (ftdi->response[3] >> 6)
|
|
|
+ & 0x03;
|
|
|
+ target->error_count = (ftdi->response[3] >> 4)
|
|
|
+ & 0x03;
|
|
|
+ target->condition_code = (ftdi->response[
|
|
|
+ 3] >> 0) & 0x0F;
|
|
|
+ if ((ftdi->response[0] & 0x10) == 0x00) {
|
|
|
+ b = have_ed_set_response(ftdi, target,
|
|
|
+ ed_length, ed_number, ed_type,
|
|
|
+ b);
|
|
|
+ goto have;
|
|
|
+ } else {
|
|
|
+ b = have_ed_get_response(ftdi, target,
|
|
|
+ ed_length, ed_number, ed_type,
|
|
|
+ b);
|
|
|
+ goto have;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else
|
|
|
+ goto more;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* create a urb, and a buffer for it, and copy the data to the urb
|
|
|
+*
|
|
|
+*/
|
|
|
+static ssize_t ftdi_elan_write(struct file *file,
|
|
|
+ const char __user *user_buffer, size_t count,
|
|
|
+ loff_t *ppos)
|
|
|
+{
|
|
|
+ int retval = 0;
|
|
|
+ struct urb *urb;
|
|
|
+ char *buf;
|
|
|
+ char data[30 *3 + 4];
|
|
|
+ char *d = data;
|
|
|
+ const char __user *s = user_buffer;
|
|
|
+ int m = (sizeof(data) - 1) / 3;
|
|
|
+ struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ if (count == 0) {
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+ urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
+ if (!urb) {
|
|
|
+ retval = -ENOMEM;
|
|
|
+ goto error_1;
|
|
|
+ }
|
|
|
+ buf = usb_buffer_alloc(ftdi->udev, count, GFP_KERNEL,
|
|
|
+ &urb->transfer_dma);
|
|
|
+ if (!buf) {
|
|
|
+ retval = -ENOMEM;
|
|
|
+ goto error_2;
|
|
|
+ }
|
|
|
+ if (copy_from_user(buf, user_buffer, count)) {
|
|
|
+ retval = -EFAULT;
|
|
|
+ goto error_3;
|
|
|
+ }
|
|
|
+ usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
|
|
|
+ ftdi->bulk_out_endpointAddr), buf, count,
|
|
|
+ ftdi_elan_write_bulk_callback, ftdi);
|
|
|
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
+ retval = usb_submit_urb(urb, GFP_KERNEL);
|
|
|
+ if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "failed submitting write urb, error %"
|
|
|
+ "d\n", retval);
|
|
|
+ goto error_4;
|
|
|
+ }
|
|
|
+ usb_free_urb(urb);
|
|
|
+ exit:;
|
|
|
+ if (count > m) {
|
|
|
+ int I = m - 1;
|
|
|
+ while (I-- > 0) {
|
|
|
+ d += sprintf(d, " %02X", 0x000000FF & *s++);
|
|
|
+ }
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ } else {
|
|
|
+ int I = count;
|
|
|
+ while (I-- > 0) {
|
|
|
+ d += sprintf(d, " %02X", 0x000000FF & *s++);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return count;
|
|
|
+ error_4: error_3:usb_buffer_free(ftdi->udev, count, buf,
|
|
|
+ urb->transfer_dma);
|
|
|
+ error_2:usb_free_urb(urb);
|
|
|
+ error_1:return retval;
|
|
|
+}
|
|
|
+
|
|
|
+static struct file_operations ftdi_elan_fops = {
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ .llseek = no_llseek,
|
|
|
+ .ioctl = ftdi_elan_ioctl,
|
|
|
+ .read = ftdi_elan_read,
|
|
|
+ .write = ftdi_elan_write,
|
|
|
+ .open = ftdi_elan_open,
|
|
|
+ .release = ftdi_elan_release,
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+* usb class driver info in order to get a minor number from the usb core,
|
|
|
+* and to have the device registered with the driver core
|
|
|
+*/
|
|
|
+static struct usb_class_driver ftdi_elan_jtag_class = {
|
|
|
+ .name = "ftdi-%d-jtag",
|
|
|
+ .fops = &ftdi_elan_fops,
|
|
|
+ .minor_base = USB_FTDI_ELAN_MINOR_BASE,
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+* the following definitions are for the
|
|
|
+* ELAN FPGA state machgine processor that
|
|
|
+* lies on the other side of the FTDI chip
|
|
|
+*/
|
|
|
+#define cPCIu132rd 0x0
|
|
|
+#define cPCIu132wr 0x1
|
|
|
+#define cPCIiord 0x2
|
|
|
+#define cPCIiowr 0x3
|
|
|
+#define cPCImemrd 0x6
|
|
|
+#define cPCImemwr 0x7
|
|
|
+#define cPCIcfgrd 0xA
|
|
|
+#define cPCIcfgwr 0xB
|
|
|
+#define cPCInull 0xF
|
|
|
+#define cU132cmd_status 0x0
|
|
|
+#define cU132flash 0x1
|
|
|
+#define cPIDsetup 0x0
|
|
|
+#define cPIDout 0x1
|
|
|
+#define cPIDin 0x2
|
|
|
+#define cPIDinonce 0x3
|
|
|
+#define cCCnoerror 0x0
|
|
|
+#define cCCcrc 0x1
|
|
|
+#define cCCbitstuff 0x2
|
|
|
+#define cCCtoggle 0x3
|
|
|
+#define cCCstall 0x4
|
|
|
+#define cCCnoresp 0x5
|
|
|
+#define cCCbadpid1 0x6
|
|
|
+#define cCCbadpid2 0x7
|
|
|
+#define cCCdataoverrun 0x8
|
|
|
+#define cCCdataunderrun 0x9
|
|
|
+#define cCCbuffoverrun 0xC
|
|
|
+#define cCCbuffunderrun 0xD
|
|
|
+#define cCCnotaccessed 0xF
|
|
|
+static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data)
|
|
|
+{
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x00 | cPCIu132wr;
|
|
|
+ command->length = 0x04;
|
|
|
+ command->address = 0x00;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 4;
|
|
|
+ command->value = data;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset,
|
|
|
+ u8 width, u32 data)
|
|
|
+{
|
|
|
+ u8 addressofs = config_offset / 4;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x00 | (cPCIcfgwr & 0x0F);
|
|
|
+ command->length = 0x04;
|
|
|
+ command->address = addressofs;
|
|
|
+ command->width = 0x00 | (width & 0x0F);
|
|
|
+ command->follows = 4;
|
|
|
+ command->value = data;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset,
|
|
|
+ u8 width, u32 data)
|
|
|
+{
|
|
|
+ u8 addressofs = mem_offset / 4;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x00 | (cPCImemwr & 0x0F);
|
|
|
+ command->length = 0x04;
|
|
|
+ command->address = addressofs;
|
|
|
+ command->width = 0x00 | (width & 0x0F);
|
|
|
+ command->follows = 4;
|
|
|
+ command->value = data;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset,
|
|
|
+ u8 width, u32 data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem);
|
|
|
+static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data)
|
|
|
+{
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ int respond_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ respond_size = ftdi->respond_next - ftdi->respond_head;
|
|
|
+ if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
|
|
|
+ {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ struct u132_respond *respond = &ftdi->respond[
|
|
|
+ RESPOND_MASK & ftdi->respond_next];
|
|
|
+ int result = -ENODEV;
|
|
|
+ respond->result = &result;
|
|
|
+ respond->header = command->header = 0x00 | cPCIu132rd;
|
|
|
+ command->length = 0x04;
|
|
|
+ respond->address = command->address = cU132cmd_status;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ respond->value = data;
|
|
|
+ init_completion(&respond->wait_completion);
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi->respond_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ wait_for_completion(&respond->wait_completion);
|
|
|
+ return result;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_read_reg(struct platform_device *pdev, u32 *data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_read_reg(ftdi, data);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_reg);
|
|
|
+static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset,
|
|
|
+ u8 width, u32 *data)
|
|
|
+{
|
|
|
+ u8 addressofs = config_offset / 4;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ int respond_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ respond_size = ftdi->respond_next - ftdi->respond_head;
|
|
|
+ if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
|
|
|
+ {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ struct u132_respond *respond = &ftdi->respond[
|
|
|
+ RESPOND_MASK & ftdi->respond_next];
|
|
|
+ int result = -ENODEV;
|
|
|
+ respond->result = &result;
|
|
|
+ respond->header = command->header = 0x00 | (cPCIcfgrd &
|
|
|
+ 0x0F);
|
|
|
+ command->length = 0x04;
|
|
|
+ respond->address = command->address = addressofs;
|
|
|
+ command->width = 0x00 | (width & 0x0F);
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ respond->value = data;
|
|
|
+ init_completion(&respond->wait_completion);
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi->respond_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ wait_for_completion(&respond->wait_completion);
|
|
|
+ return result;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset,
|
|
|
+ u8 width, u32 *data)
|
|
|
+{
|
|
|
+ u8 addressofs = mem_offset / 4;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ int respond_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ respond_size = ftdi->respond_next - ftdi->respond_head;
|
|
|
+ if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
|
|
|
+ {
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ struct u132_respond *respond = &ftdi->respond[
|
|
|
+ RESPOND_MASK & ftdi->respond_next];
|
|
|
+ int result = -ENODEV;
|
|
|
+ respond->result = &result;
|
|
|
+ respond->header = command->header = 0x00 | (cPCImemrd &
|
|
|
+ 0x0F);
|
|
|
+ command->length = 0x04;
|
|
|
+ respond->address = command->address = addressofs;
|
|
|
+ command->width = 0x00 | (width & 0x0F);
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ respond->value = data;
|
|
|
+ init_completion(&respond->wait_completion);
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi->respond_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ wait_for_completion(&respond->wait_completion);
|
|
|
+ return result;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset,
|
|
|
+ u8 width, u32 *data)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else
|
|
|
+ return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem);
|
|
|
+static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x80 | (ed << 5);
|
|
|
+ command->length = 0x8007;
|
|
|
+ command->address = (toggle_bits << 6) | (ep_number << 2)
|
|
|
+ | (address << 0);
|
|
|
+ command->width = usb_maxpacket(urb->dev, urb->pipe,
|
|
|
+ usb_pipeout(urb->pipe));
|
|
|
+ command->follows = 8;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = urb->setup_packet;
|
|
|
+ target->callback = callback;
|
|
|
+ target->endp = endp;
|
|
|
+ target->urb = urb;
|
|
|
+ target->active = 1;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address,
|
|
|
+ ep_number, toggle_bits, callback);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup);
|
|
|
+static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ int remaining_length = urb->transfer_buffer_length -
|
|
|
+ urb->actual_length;
|
|
|
+ command->header = 0x82 | (ed << 5);
|
|
|
+ if (remaining_length == 0) {
|
|
|
+ command->length = 0x0000;
|
|
|
+ } else if (remaining_length > 1024) {
|
|
|
+ command->length = 0x8000 | 1023;
|
|
|
+ } else
|
|
|
+ command->length = 0x8000 | (remaining_length -
|
|
|
+ 1);
|
|
|
+ command->address = (toggle_bits << 6) | (ep_number << 2)
|
|
|
+ | (address << 0);
|
|
|
+ command->width = usb_maxpacket(urb->dev, urb->pipe,
|
|
|
+ usb_pipeout(urb->pipe));
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ target->callback = callback;
|
|
|
+ target->endp = endp;
|
|
|
+ target->urb = urb;
|
|
|
+ target->active = 1;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address,
|
|
|
+ ep_number, toggle_bits, callback);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input);
|
|
|
+static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x81 | (ed << 5);
|
|
|
+ command->length = 0x0000;
|
|
|
+ command->address = (toggle_bits << 6) | (ep_number << 2)
|
|
|
+ | (address << 0);
|
|
|
+ command->width = usb_maxpacket(urb->dev, urb->pipe,
|
|
|
+ usb_pipeout(urb->pipe));
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ target->callback = callback;
|
|
|
+ target->endp = endp;
|
|
|
+ target->urb = urb;
|
|
|
+ target->active = 1;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address,
|
|
|
+ ep_number, toggle_bits, callback);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty);
|
|
|
+static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ u8 *b;
|
|
|
+ u16 urb_size;
|
|
|
+ int i = 0;
|
|
|
+ char data[30 *3 + 4];
|
|
|
+ char *d = data;
|
|
|
+ int m = (sizeof(data) - 1) / 3;
|
|
|
+ int l = 0;
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x81 | (ed << 5);
|
|
|
+ command->address = (toggle_bits << 6) | (ep_number << 2)
|
|
|
+ | (address << 0);
|
|
|
+ command->width = usb_maxpacket(urb->dev, urb->pipe,
|
|
|
+ usb_pipeout(urb->pipe));
|
|
|
+ command->follows = min(1024,
|
|
|
+ urb->transfer_buffer_length -
|
|
|
+ urb->actual_length);
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = urb->transfer_buffer +
|
|
|
+ urb->actual_length;
|
|
|
+ command->length = 0x8000 | (command->follows - 1);
|
|
|
+ b = command->buffer;
|
|
|
+ urb_size = command->follows;
|
|
|
+ data[0] = 0;
|
|
|
+ while (urb_size-- > 0) {
|
|
|
+ if (i > m) {
|
|
|
+ } else if (i++ < m) {
|
|
|
+ int w = sprintf(d, " %02X", *b++);
|
|
|
+ d += w;
|
|
|
+ l += w;
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ }
|
|
|
+ target->callback = callback;
|
|
|
+ target->endp = endp;
|
|
|
+ target->urb = urb;
|
|
|
+ target->active = 1;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address,
|
|
|
+ ep_number, toggle_bits, callback);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output);
|
|
|
+static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ wait:if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ int command_size;
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ command_size = ftdi->command_next - ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ int remaining_length = urb->transfer_buffer_length -
|
|
|
+ urb->actual_length;
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ struct u132_command *command = &ftdi->command[
|
|
|
+ COMMAND_MASK & ftdi->command_next];
|
|
|
+ command->header = 0x83 | (ed << 5);
|
|
|
+ if (remaining_length == 0) {
|
|
|
+ command->length = 0x0000;
|
|
|
+ } else if (remaining_length > 1024) {
|
|
|
+ command->length = 0x8000 | 1023;
|
|
|
+ } else
|
|
|
+ command->length = 0x8000 | (remaining_length -
|
|
|
+ 1);
|
|
|
+ command->address = (toggle_bits << 6) | (ep_number << 2)
|
|
|
+ | (address << 0);
|
|
|
+ command->width = usb_maxpacket(urb->dev, urb->pipe,
|
|
|
+ usb_pipeout(urb->pipe));
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = NULL;
|
|
|
+ target->callback = callback;
|
|
|
+ target->endp = endp;
|
|
|
+ target->urb = urb;
|
|
|
+ target->active = 1;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ goto wait;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
|
|
|
+ void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
|
|
|
+ int toggle_bits, int error_count, int condition_code, int repeat_number,
|
|
|
+ int halted, int skipped, int actual, int non_null))
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address,
|
|
|
+ ep_number, toggle_bits, callback);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single);
|
|
|
+static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number,
|
|
|
+ void *endp)
|
|
|
+{
|
|
|
+ u8 ed = ed_number - 1;
|
|
|
+ if (ftdi->disconnected > 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else if (ftdi->initialized == 0) {
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ struct u132_target *target = &ftdi->target[ed];
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ if (target->abandoning > 0) {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ target->abandoning = 1;
|
|
|
+ wait_1:if (target->active == 1) {
|
|
|
+ int command_size = ftdi->command_next -
|
|
|
+ ftdi->command_head;
|
|
|
+ if (command_size < COMMAND_SIZE) {
|
|
|
+ struct u132_command *command =
|
|
|
+ &ftdi->command[COMMAND_MASK &
|
|
|
+ ftdi->command_next];
|
|
|
+ command->header = 0x80 | (ed << 5) |
|
|
|
+ 0x4;
|
|
|
+ command->length = 0x00;
|
|
|
+ command->address = 0x00;
|
|
|
+ command->width = 0x00;
|
|
|
+ command->follows = 0;
|
|
|
+ command->value = 0;
|
|
|
+ command->buffer = &command->value;
|
|
|
+ ftdi->command_next += 1;
|
|
|
+ ftdi_elan_kick_command_queue(ftdi);
|
|
|
+ } else {
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ msleep(100);
|
|
|
+ down(&ftdi->u132_lock);
|
|
|
+ goto wait_1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ up(&ftdi->u132_lock);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number,
|
|
|
+ void *endp)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
|
|
|
+ return ftdi_elan_edset_flush(ftdi, ed_number, endp);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush);
|
|
|
+static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retry_on_empty = 10;
|
|
|
+ int retry_on_timeout = 5;
|
|
|
+ int retry_on_status = 20;
|
|
|
+ more:{
|
|
|
+ int packet_bytes = 0;
|
|
|
+ int retval = usb_bulk_msg(ftdi->udev,
|
|
|
+ usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
|
|
|
+ ftdi->bulk_in_buffer, ftdi->bulk_in_size,
|
|
|
+ &packet_bytes, msecs_to_jiffies(100));
|
|
|
+ if (packet_bytes > 2) {
|
|
|
+ char diag[30 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = (sizeof(diag) - 1) / 3;
|
|
|
+ char *b = ftdi->bulk_in_buffer;
|
|
|
+ int bytes_read = 0;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (packet_bytes-- > 0) {
|
|
|
+ char c = *b++;
|
|
|
+ if (bytes_read < m) {
|
|
|
+ d += sprintf(d, " %02X",
|
|
|
+ 0x000000FF & c);
|
|
|
+ } else if (bytes_read > m) {
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ bytes_read += 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ goto more;
|
|
|
+ } else if (packet_bytes > 1) {
|
|
|
+ char s1 = ftdi->bulk_in_buffer[0];
|
|
|
+ char s2 = ftdi->bulk_in_buffer[1];
|
|
|
+ if (s1 == 0x31 && s2 == 0x60) {
|
|
|
+ return 0;
|
|
|
+ } else if (retry_on_status-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
|
|
|
+ "imit reached\n");
|
|
|
+ return -EFAULT;
|
|
|
+ }
|
|
|
+ } else if (packet_bytes > 0) {
|
|
|
+ char b1 = ftdi->bulk_in_buffer[0];
|
|
|
+ dev_err(&ftdi->udev->dev, "only one byte flushed from F"
|
|
|
+ "TDI = %02X\n", b1);
|
|
|
+ if (retry_on_status-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
|
|
|
+ "imit reached\n");
|
|
|
+ return -EFAULT;
|
|
|
+ }
|
|
|
+ } else if (retval == -ETIMEDOUT) {
|
|
|
+ if (retry_on_timeout-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
|
|
|
+ "t reached\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ } else if (retval == 0) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "empty packet retry l"
|
|
|
+ "imit reached\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "error = %d\n", retval);
|
|
|
+ return retval;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* send the long flush sequence
|
|
|
+*
|
|
|
+*/
|
|
|
+static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retval;
|
|
|
+ struct urb *urb;
|
|
|
+ char *buf;
|
|
|
+ int I = 257;
|
|
|
+ int i = 0;
|
|
|
+ urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
+ if (!urb) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequ"
|
|
|
+ "ence\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
|
|
|
+ if (!buf) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq"
|
|
|
+ "uence\n");
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ while (I-- > 0)
|
|
|
+ buf[i++] = 0x55;
|
|
|
+ usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
|
|
|
+ ftdi->bulk_out_endpointAddr), buf, i,
|
|
|
+ ftdi_elan_write_bulk_callback, ftdi);
|
|
|
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
+ retval = usb_submit_urb(urb, GFP_KERNEL);
|
|
|
+ if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
|
|
|
+ "flush sequence\n");
|
|
|
+ usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* send the reset sequence
|
|
|
+*
|
|
|
+*/
|
|
|
+static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retval;
|
|
|
+ struct urb *urb;
|
|
|
+ char *buf;
|
|
|
+ int I = 4;
|
|
|
+ int i = 0;
|
|
|
+ urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
+ if (!urb) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not get a urb for the reset se"
|
|
|
+ "quence\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
|
|
|
+ if (!buf) {
|
|
|
+ dev_err(&ftdi->udev->dev, "could not get a buffer for the reset"
|
|
|
+ " sequence\n");
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ buf[i++] = 0x55;
|
|
|
+ buf[i++] = 0xAA;
|
|
|
+ buf[i++] = 0x5A;
|
|
|
+ buf[i++] = 0xA5;
|
|
|
+ usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
|
|
|
+ ftdi->bulk_out_endpointAddr), buf, i,
|
|
|
+ ftdi_elan_write_bulk_callback, ftdi);
|
|
|
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
+ retval = usb_submit_urb(urb, GFP_KERNEL);
|
|
|
+ if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
|
|
|
+ "reset sequence\n");
|
|
|
+ usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ usb_free_urb(urb);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_synchronize(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retval;
|
|
|
+ int long_stop = 10;
|
|
|
+ int retry_on_timeout = 5;
|
|
|
+ int retry_on_empty = 10;
|
|
|
+ int err_count = 0;
|
|
|
+ retval = ftdi_elan_flush_input_fifo(ftdi);
|
|
|
+ if (retval)
|
|
|
+ return retval;
|
|
|
+ ftdi->bulk_in_left = 0;
|
|
|
+ ftdi->bulk_in_last = -1;
|
|
|
+ while (long_stop-- > 0) {
|
|
|
+ int read_stop;
|
|
|
+ int read_stuck;
|
|
|
+ retval = ftdi_elan_synchronize_flush(ftdi);
|
|
|
+ if (retval)
|
|
|
+ return retval;
|
|
|
+ retval = ftdi_elan_flush_input_fifo(ftdi);
|
|
|
+ if (retval)
|
|
|
+ return retval;
|
|
|
+ reset:retval = ftdi_elan_synchronize_reset(ftdi);
|
|
|
+ if (retval)
|
|
|
+ return retval;
|
|
|
+ read_stop = 100;
|
|
|
+ read_stuck = 10;
|
|
|
+ read:{
|
|
|
+ int packet_bytes = 0;
|
|
|
+ retval = usb_bulk_msg(ftdi->udev,
|
|
|
+ usb_rcvbulkpipe(ftdi->udev,
|
|
|
+ ftdi->bulk_in_endpointAddr),
|
|
|
+ ftdi->bulk_in_buffer, ftdi->bulk_in_size,
|
|
|
+ &packet_bytes, msecs_to_jiffies(500));
|
|
|
+ if (packet_bytes > 2) {
|
|
|
+ char diag[30 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = (sizeof(diag) - 1) / 3;
|
|
|
+ char *b = ftdi->bulk_in_buffer;
|
|
|
+ int bytes_read = 0;
|
|
|
+ unsigned char c = 0;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (packet_bytes-- > 0) {
|
|
|
+ c = *b++;
|
|
|
+ if (bytes_read < m) {
|
|
|
+ d += sprintf(d, " %02X", c);
|
|
|
+ } else if (bytes_read > m) {
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ bytes_read += 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if (c == 0x7E) {
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ if (c == 0x55) {
|
|
|
+ goto read;
|
|
|
+ } else if (read_stop-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "retr"
|
|
|
+ "y limit reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if (packet_bytes > 1) {
|
|
|
+ unsigned char s1 = ftdi->bulk_in_buffer[0];
|
|
|
+ unsigned char s2 = ftdi->bulk_in_buffer[1];
|
|
|
+ if (s1 == 0x31 && s2 == 0x00) {
|
|
|
+ if (read_stuck-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else
|
|
|
+ goto reset;
|
|
|
+ } else if (s1 == 0x31 && s2 == 0x60) {
|
|
|
+ if (read_stop-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "retr"
|
|
|
+ "y limit reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if (read_stop-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "retr"
|
|
|
+ "y limit reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if (packet_bytes > 0) {
|
|
|
+ if (read_stop-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "retry limit "
|
|
|
+ "reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else if (retval == -ETIMEDOUT) {
|
|
|
+ if (retry_on_timeout-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "TIMED OUT re"
|
|
|
+ "try limit reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else if (retval == 0) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "empty packet"
|
|
|
+ " retry limit reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ err_count += 1;
|
|
|
+ dev_err(&ftdi->udev->dev, "error = %d\n",
|
|
|
+ retval);
|
|
|
+ if (read_stop-- > 0) {
|
|
|
+ goto read;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "retry limit "
|
|
|
+ "reached\n");
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ dev_err(&ftdi->udev->dev, "failed to synchronize\n");
|
|
|
+ return -EFAULT;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int retry_on_empty = 10;
|
|
|
+ int retry_on_timeout = 5;
|
|
|
+ int retry_on_status = 50;
|
|
|
+ more:{
|
|
|
+ int packet_bytes = 0;
|
|
|
+ int retval = usb_bulk_msg(ftdi->udev,
|
|
|
+ usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
|
|
|
+ ftdi->bulk_in_buffer, ftdi->bulk_in_size,
|
|
|
+ &packet_bytes, msecs_to_jiffies(1000));
|
|
|
+ if (packet_bytes > 2) {
|
|
|
+ char diag[30 *3 + 4];
|
|
|
+ char *d = diag;
|
|
|
+ int m = (sizeof(diag) - 1) / 3;
|
|
|
+ char *b = ftdi->bulk_in_buffer;
|
|
|
+ int bytes_read = 0;
|
|
|
+ diag[0] = 0;
|
|
|
+ while (packet_bytes-- > 0) {
|
|
|
+ char c = *b++;
|
|
|
+ if (bytes_read < m) {
|
|
|
+ d += sprintf(d, " %02X",
|
|
|
+ 0x000000FF & c);
|
|
|
+ } else if (bytes_read > m) {
|
|
|
+ } else
|
|
|
+ d += sprintf(d, " ..");
|
|
|
+ bytes_read += 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ goto more;
|
|
|
+ } else if (packet_bytes > 1) {
|
|
|
+ char s1 = ftdi->bulk_in_buffer[0];
|
|
|
+ char s2 = ftdi->bulk_in_buffer[1];
|
|
|
+ if (s1 == 0x31 && s2 == 0x60) {
|
|
|
+ return 0;
|
|
|
+ } else if (retry_on_status-- > 0) {
|
|
|
+ msleep(5);
|
|
|
+ goto more;
|
|
|
+ } else
|
|
|
+ return -EFAULT;
|
|
|
+ } else if (packet_bytes > 0) {
|
|
|
+ char b1 = ftdi->bulk_in_buffer[0];
|
|
|
+ dev_err(&ftdi->udev->dev, "only one byte flushed from F"
|
|
|
+ "TDI = %02X\n", b1);
|
|
|
+ if (retry_on_status-- > 0) {
|
|
|
+ msleep(5);
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
|
|
|
+ "imit reached\n");
|
|
|
+ return -EFAULT;
|
|
|
+ }
|
|
|
+ } else if (retval == -ETIMEDOUT) {
|
|
|
+ if (retry_on_timeout-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
|
|
|
+ "t reached\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ } else if (retval == 0) {
|
|
|
+ if (retry_on_empty-- > 0) {
|
|
|
+ goto more;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "empty packet retry l"
|
|
|
+ "imit reached\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "error = %d\n", retval);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ if (ftdi->controlreg & 0x00400000) {
|
|
|
+ if (ftdi->card_ejected) {
|
|
|
+ } else {
|
|
|
+ ftdi->card_ejected = 1;
|
|
|
+ dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = "
|
|
|
+ "%08X\n", ftdi->controlreg);
|
|
|
+ }
|
|
|
+ return -ENODEV;
|
|
|
+ } else {
|
|
|
+ u8 fn = ftdi->function - 1;
|
|
|
+ int activePCIfn = fn << 8;
|
|
|
+ u32 pcidata;
|
|
|
+ u32 pciVID;
|
|
|
+ u32 pciPID;
|
|
|
+ int reg = 0;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ pciVID = pcidata & 0xFFFF;
|
|
|
+ pciPID = (pcidata >> 16) & 0xFFFF;
|
|
|
+ if (pciVID == ftdi->platform_data.vendor && pciPID ==
|
|
|
+ ftdi->platform_data.device) {
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X devi"
|
|
|
+ "ce=%04X pciPID=%04X\n",
|
|
|
+ ftdi->platform_data.vendor, pciVID,
|
|
|
+ ftdi->platform_data.device, pciPID);
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ u32 latence_timer;
|
|
|
+ u32 controlreg;
|
|
|
+ int UxxxStatus;
|
|
|
+ u32 pcidata;
|
|
|
+ int reg = 0;
|
|
|
+ int foundOHCI = 0;
|
|
|
+ u8 fn;
|
|
|
+ int activePCIfn = 0;
|
|
|
+ u32 pciVID = 0;
|
|
|
+ u32 pciPID = 0;
|
|
|
+ UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ msleep(750);
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ msleep(250);
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ msleep(1000);
|
|
|
+ for (fn = 0; (fn < 4) && (!foundOHCI); fn++) {
|
|
|
+ activePCIfn = fn << 8;
|
|
|
+ ftdi->function = fn + 1;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ pciVID = pcidata & 0xFFFF;
|
|
|
+ pciPID = (pcidata >> 16) & 0xFFFF;
|
|
|
+ if ((pciVID == 0x1045) && (pciPID == 0xc861)) {
|
|
|
+ foundOHCI = 1;
|
|
|
+ } else if ((pciVID == 0x1033) && (pciPID == 0x0035)) {
|
|
|
+ foundOHCI = 1;
|
|
|
+ } else if ((pciVID == 0x10b9) && (pciPID == 0x5237)) {
|
|
|
+ foundOHCI = 1;
|
|
|
+ } else if ((pciVID == 0x11c1) && (pciPID == 0x5802)) {
|
|
|
+ foundOHCI = 1;
|
|
|
+ } else if ((pciVID == 0x11AB) && (pciPID == 0x1FA6)) {
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (foundOHCI == 0) {
|
|
|
+ return -ENXIO;
|
|
|
+ }
|
|
|
+ ftdi->platform_data.vendor = pciVID;
|
|
|
+ ftdi->platform_data.device = pciPID;
|
|
|
+ UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ reg = 16;
|
|
|
+ UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ 0xFFFFFFFF);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ 0xF0000000);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ reg = 12;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &latence_timer);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ latence_timer &= 0xFFFF00FF;
|
|
|
+ latence_timer |= 0x00001600;
|
|
|
+ UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
|
|
|
+ latence_timer);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ reg = 4;
|
|
|
+ UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
|
|
|
+ 0x06);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
|
|
|
+ &pcidata);
|
|
|
+ if (UxxxStatus)
|
|
|
+ return UxxxStatus;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi)
|
|
|
+{
|
|
|
+ u32 pcidata;
|
|
|
+ int U132Status;
|
|
|
+ int reg;
|
|
|
+ int reset_repeat = 0;
|
|
|
+ do_reset:reg = 8;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x0e, 0x01);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reset_check:{
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ if (pcidata & 1) {
|
|
|
+ msleep(500);
|
|
|
+ if (reset_repeat++ > 100) {
|
|
|
+ reset_repeat = 0;
|
|
|
+ goto do_reset;
|
|
|
+ } else
|
|
|
+ goto reset_check;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ goto dump_regs;
|
|
|
+ msleep(500);
|
|
|
+ reg = 0x28;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x11000000);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x40;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x2edf);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x34;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x2edf2edf);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 4;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0xA0);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ msleep(250);
|
|
|
+ reg = 8;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x0e, 0x04);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x28;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 8;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x48;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x00001200);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x54;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x58;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x34;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x28002edf);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ msleep(100);
|
|
|
+ reg = 0x50;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x10000);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x54;
|
|
|
+ power_check:U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ if (!(pcidata & 1)) {
|
|
|
+ msleep(500);
|
|
|
+ goto power_check;
|
|
|
+ }
|
|
|
+ msleep(3000);
|
|
|
+ reg = 0x54;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x58;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x54;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x02);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x54;
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x10);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ msleep(750);
|
|
|
+ reg = 0x54;
|
|
|
+ if (0) {
|
|
|
+ U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x02);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ }
|
|
|
+ if (0) {
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ }
|
|
|
+ reg = 0x54;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ reg = 0x58;
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ dump_regs:for (reg = 0; reg <= 0x54; reg += 4) {
|
|
|
+ U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
|
|
|
+ if (U132Status)
|
|
|
+ return U132Status;
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+* we use only the first bulk-in and bulk-out endpoints
|
|
|
+*/
|
|
|
+static int ftdi_elan_probe(struct usb_interface *interface,
|
|
|
+ const struct usb_device_id *id)
|
|
|
+{
|
|
|
+ struct usb_host_interface *iface_desc;
|
|
|
+ struct usb_endpoint_descriptor *endpoint;
|
|
|
+ size_t buffer_size;
|
|
|
+ int i;
|
|
|
+ int retval = -ENOMEM;
|
|
|
+ struct usb_ftdi *ftdi = kmalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
|
|
|
+ if (ftdi == NULL) {
|
|
|
+ printk(KERN_ERR "Out of memory\n");
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ memset(ftdi, 0x00, sizeof(struct usb_ftdi));
|
|
|
+ down(&ftdi_module_lock);
|
|
|
+ list_add_tail(&ftdi->ftdi_list, &ftdi_static_list);
|
|
|
+ ftdi->sequence_num = ++ftdi_instances;
|
|
|
+ up(&ftdi_module_lock);
|
|
|
+ ftdi_elan_init_kref(ftdi);
|
|
|
+ init_MUTEX(&ftdi->sw_lock);
|
|
|
+ ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
|
|
|
+ ftdi->interface = interface;
|
|
|
+ init_MUTEX(&ftdi->u132_lock);
|
|
|
+ ftdi->expected = 4;
|
|
|
+ iface_desc = interface->cur_altsetting;
|
|
|
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
|
|
|
+ endpoint = &iface_desc->endpoint[i].desc;
|
|
|
+ if (!ftdi->bulk_in_endpointAddr &&
|
|
|
+ ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
|
+ == USB_DIR_IN) && ((endpoint->bmAttributes &
|
|
|
+ USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK))
|
|
|
+ {
|
|
|
+ buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
|
|
|
+ ftdi->bulk_in_size = buffer_size;
|
|
|
+ ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress;
|
|
|
+ ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
|
|
|
+ if (!ftdi->bulk_in_buffer) {
|
|
|
+ dev_err(&ftdi->udev->dev, "Could not allocate b"
|
|
|
+ "ulk_in_buffer\n");
|
|
|
+ retval = -ENOMEM;
|
|
|
+ goto error;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!ftdi->bulk_out_endpointAddr &&
|
|
|
+ ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
|
+ == USB_DIR_OUT) && ((endpoint->bmAttributes &
|
|
|
+ USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK))
|
|
|
+ {
|
|
|
+ ftdi->bulk_out_endpointAddr =
|
|
|
+ endpoint->bEndpointAddress;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) {
|
|
|
+ dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk"
|
|
|
+ "-out endpoints\n");
|
|
|
+ retval = -ENODEV;
|
|
|
+ goto error;
|
|
|
+ }
|
|
|
+ dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n",
|
|
|
+ iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr,
|
|
|
+ ftdi->bulk_out_endpointAddr);
|
|
|
+ usb_set_intfdata(interface, ftdi);
|
|
|
+ if (iface_desc->desc.bInterfaceNumber == 0 &&
|
|
|
+ ftdi->bulk_in_endpointAddr == 0x81 &&
|
|
|
+ ftdi->bulk_out_endpointAddr == 0x02) {
|
|
|
+ retval = usb_register_dev(interface, &ftdi_elan_jtag_class);
|
|
|
+ if (retval) {
|
|
|
+ dev_err(&ftdi->udev->dev, "Not able to get a minor for "
|
|
|
+ "this device.\n");
|
|
|
+ usb_set_intfdata(interface, NULL);
|
|
|
+ retval = -ENOMEM;
|
|
|
+ goto error;
|
|
|
+ } else {
|
|
|
+ ftdi->class = &ftdi_elan_jtag_class;
|
|
|
+ dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface "
|
|
|
+ "%d now attached to ftdi%d\n", ftdi,
|
|
|
+ iface_desc->desc.bInterfaceNumber,
|
|
|
+ interface->minor);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ } else if (iface_desc->desc.bInterfaceNumber == 1 &&
|
|
|
+ ftdi->bulk_in_endpointAddr == 0x83 &&
|
|
|
+ ftdi->bulk_out_endpointAddr == 0x04) {
|
|
|
+ ftdi->class = NULL;
|
|
|
+ dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now a"
|
|
|
+ "ctivated\n", ftdi, iface_desc->desc.bInterfaceNumber);
|
|
|
+ INIT_WORK(&ftdi->status_work, ftdi_elan_status_work,
|
|
|
+ (void *)ftdi);
|
|
|
+ INIT_WORK(&ftdi->command_work, ftdi_elan_command_work,
|
|
|
+ (void *)ftdi);
|
|
|
+ INIT_WORK(&ftdi->respond_work, ftdi_elan_respond_work,
|
|
|
+ (void *)ftdi);
|
|
|
+ ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000));
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ dev_err(&ftdi->udev->dev,
|
|
|
+ "Could not find ELAN's U132 device\n");
|
|
|
+ retval = -ENODEV;
|
|
|
+ goto error;
|
|
|
+ }
|
|
|
+ error:if (ftdi) {
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+ }
|
|
|
+ return retval;
|
|
|
+}
|
|
|
+
|
|
|
+static void ftdi_elan_disconnect(struct usb_interface *interface)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi = usb_get_intfdata(interface);
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ if (ftdi->class) {
|
|
|
+ int minor = interface->minor;
|
|
|
+ struct usb_class_driver *class = ftdi->class;
|
|
|
+ usb_set_intfdata(interface, NULL);
|
|
|
+ usb_deregister_dev(interface, class);
|
|
|
+ dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on min"
|
|
|
+ "or %d now disconnected\n", minor);
|
|
|
+ } else {
|
|
|
+ ftdi_status_cancel_work(ftdi);
|
|
|
+ ftdi_command_cancel_work(ftdi);
|
|
|
+ ftdi_response_cancel_work(ftdi);
|
|
|
+ ftdi_elan_abandon_completions(ftdi);
|
|
|
+ ftdi_elan_abandon_targets(ftdi);
|
|
|
+ if (ftdi->registered) {
|
|
|
+ platform_device_unregister(&ftdi->platform_dev);
|
|
|
+ ftdi->synchronized = 0;
|
|
|
+ ftdi->enumerated = 0;
|
|
|
+ ftdi->registered = 0;
|
|
|
+ }
|
|
|
+ flush_workqueue(status_queue);
|
|
|
+ flush_workqueue(command_queue);
|
|
|
+ flush_workqueue(respond_queue);
|
|
|
+ ftdi->disconnected += 1;
|
|
|
+ usb_set_intfdata(interface, NULL);
|
|
|
+ dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller inter"
|
|
|
+ "face now disconnected\n");
|
|
|
+ }
|
|
|
+ ftdi_elan_put_kref(ftdi);
|
|
|
+}
|
|
|
+
|
|
|
+static struct usb_driver ftdi_elan_driver = {
|
|
|
+ .name = "ftdi-elan",
|
|
|
+ .probe = ftdi_elan_probe,
|
|
|
+ .disconnect = ftdi_elan_disconnect,
|
|
|
+ .id_table = ftdi_elan_table,
|
|
|
+};
|
|
|
+static int __init ftdi_elan_init(void)
|
|
|
+{
|
|
|
+ int result;
|
|
|
+ printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name,
|
|
|
+ __TIME__, __DATE__);
|
|
|
+ init_MUTEX(&ftdi_module_lock);
|
|
|
+ INIT_LIST_HEAD(&ftdi_static_list);
|
|
|
+ status_queue = create_singlethread_workqueue("ftdi-status-control");
|
|
|
+ command_queue = create_singlethread_workqueue("ftdi-command-engine");
|
|
|
+ respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
|
|
|
+ result = usb_register(&ftdi_elan_driver);
|
|
|
+ if (result)
|
|
|
+ printk(KERN_ERR "usb_register failed. Error number %d\n",
|
|
|
+ result);
|
|
|
+ return result;
|
|
|
+}
|
|
|
+
|
|
|
+static void __exit ftdi_elan_exit(void)
|
|
|
+{
|
|
|
+ struct usb_ftdi *ftdi;
|
|
|
+ struct usb_ftdi *temp;
|
|
|
+ usb_deregister(&ftdi_elan_driver);
|
|
|
+ printk(KERN_INFO "ftdi_u132 driver deregistered\n");
|
|
|
+ list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) {
|
|
|
+ ftdi_status_cancel_work(ftdi);
|
|
|
+ ftdi_command_cancel_work(ftdi);
|
|
|
+ ftdi_response_cancel_work(ftdi);
|
|
|
+ } flush_workqueue(status_queue);
|
|
|
+ destroy_workqueue(status_queue);
|
|
|
+ status_queue = NULL;
|
|
|
+ flush_workqueue(command_queue);
|
|
|
+ destroy_workqueue(command_queue);
|
|
|
+ command_queue = NULL;
|
|
|
+ flush_workqueue(respond_queue);
|
|
|
+ destroy_workqueue(respond_queue);
|
|
|
+ respond_queue = NULL;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+module_init(ftdi_elan_init);
|
|
|
+module_exit(ftdi_elan_exit);
|
Tony Olech